Southwest Airlines flight WN 3644: Multiple routes

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FLIGHT SCHEDULE
Direct Flights:
Mon,Thu,Fri 05:50 Las Vegas Harry Reid (LAS) 1 07:00 San Diego (SAN) 1 WN 3644 Non-stop Boeing 737-800 (73H) 1:10 Effective 2026-03-05 through 2026-04-06
Sun 12:00 Nashville (BNA) 15:15 New York LaGuardia (LGA) B WN 3644 Non-stop Boeing 737-700 (Scimitar Winglets) 2:15 Effective 2026-08-09 through 2026-09-27
Sat 13:00 Nashville (BNA) 16:20 New York LaGuardia (LGA) B WN 3644 Non-stop Boeing 737 MAX 8 (7M8) 2:20 Effective 2026-08-08 through 2026-09-26
Mon,Thu,Fri 13:15 San Francisco (SFO) 2 14:55 Las Vegas Harry Reid (LAS) 1 WN 3644 Non-stop Boeing 737 MAX 8 (7M8) 1:40 Effective 2026-06-04 through 2026-08-03
Tue,Wed 13:35 Nashville (BNA) 16:50 New York LaGuardia (LGA) B WN 3644 Non-stop Boeing 737-800 (73H) 2:15 Effective 2026-08-04 through 2026-09-30
Mon,Thu,Fri 14:15 Nashville (BNA) 15:40 Pensacola (PNS) WN 3644 Non-stop Boeing 737 MAX 8 (7M8) 1:25 Effective 2026-04-09 through 2026-06-01
Tue,Wed 14:15 San Francisco (SFO) 2 15:55 Las Vegas Harry Reid (LAS) 1 WN 3644 Non-stop Boeing 737-700 (Scimitar Winglets) 1:40 Effective 2026-06-09 through 2026-07-29
Sun 14:40 Pensacola (PNS) 16:55 Denver (DEN) WN 3644 Non-stop Boeing 737-800 (73H) 3:15 Effective 2026-04-12 through 2026-05-17
Sun 14:40 Pensacola (PNS) 16:55 Denver (DEN) WN 3644 Non-stop Boeing 737-800 (73H) 3:15 Operates only on 2026-05-31
Tue,Wed 15:30 Pensacola (PNS) 17:40 Denver (DEN) WN 3644 Non-stop Boeing 737 MAX 8 (7M8) 3:10 Effective 2026-04-07 through 2026-06-03
Sun 15:35 San Francisco (SFO) 2 17:00 Los Angeles (LAX) 1 WN 3644 Non-stop Boeing 737 MAX 8 (7M8) 1:25 Effective 2026-03-08 through 2026-04-05
Sun 15:35 Pensacola (PNS) 17:45 Denver (DEN) WN 3644 Non-stop Boeing 737 MAX 8 (7M8) 3:10 Operates only on 2026-05-24
Sat 15:55 Pensacola (PNS) 18:10 Denver (DEN) WN 3644 Non-stop Boeing 737 MAX 8 (7M8) 3:15 Effective 2026-04-11 through 2026-05-30
Mon,Thu,Fri 16:20 Pensacola (PNS) 18:35 Denver (DEN) WN 3644 Non-stop Boeing 737 MAX 8 (7M8) 3:15 Effective 2026-04-09 through 2026-06-01
Mon,Tue,Fri,Sun 20:30 Austin (AUS) 22:25 Sacramento (SMF) B WN 3644 Non-stop Boeing 737 MAX 8 (7M8) 3:55 Valid until 2026-01-04
Mon,Thu,Fri 20:35 New Orleans (MSY) 21:50 Houston Hobby (HOU) WN 3644 Non-stop Boeing 737 MAX 8 (7M8) 1:15 Effective 2026-08-06 through 2026-09-28
Sat 21:50 Orlando (MCO) 00:45 Luis Munoz Marin, San Juan (SJU) B WN 3644 Non-stop Boeing 737-800 (73H) 2:55 Effective 2026-06-06 through 2026-08-01 The flight arrives 1 day after departure.
Sat 22:25 Austin (AUS) 00:20 Sacramento (SMF) B WN 3644 Non-stop Boeing 737-800 (73H) 3:55 Valid until 2026-01-03 The flight arrives 1 day after departure.
Non-Direct Flights:
Mon,Thu,Fri 14:15 Nashville (BNA) 18:35 Denver (DEN) WN 3644 1-stop Boeing 737 MAX 8 (7M8) 5:20 Effective 2026-04-09 through 2026-06-01

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Parallax here

This flight number is listed as serving the following routes:

Austin (AUS) - Sacramento (SMF)
Las Vegas Harry Reid (LAS) - San Diego (SAN)
Nashville (BNA) - Denver (DEN)
Nashville (BNA) - New York LaGuardia (LGA)
Nashville (BNA) - Pensacola (PNS)
New Orleans (MSY) - Houston Hobby (HOU)
Orlando (MCO) - Luis Munoz Marin, San Juan (SJU)
Pensacola (PNS) - Denver (DEN)
San Francisco (SFO) - Las Vegas Harry Reid (LAS)
San Francisco (SFO) - Los Angeles (LAX)

All Southwest Airlines flights

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Southwest Airlines flight WN 3644: Multiple routes

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FLIGHT SCHEDULE

Direct Flights:

Southwest Airlines WN3644

05:50

Las Vegas Harry Reid (LAS) 1

07:00

San Diego (SAN) 1

Effective 2026-03-05 through 2026-04-06

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 1:10, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3644

12:00

Nashville (BNA)

15:15

New York LaGuardia (LGA) B

Effective 2026-08-09 through 2026-09-27

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:15, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3644

13:00

Nashville (BNA)

16:20

New York LaGuardia (LGA) B

Effective 2026-08-08 through 2026-09-26

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 2:20, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3644

13:15

San Francisco (SFO) 2

14:55

Las Vegas Harry Reid (LAS) 1

Effective 2026-06-04 through 2026-08-03

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 1:40, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3644

13:35

Nashville (BNA)

16:50

New York LaGuardia (LGA) B

Effective 2026-08-04 through 2026-09-30

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 2:15, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3644

14:15

Nashville (BNA)

15:40

Pensacola (PNS)

Effective 2026-04-09 through 2026-06-01

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 1:25, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3644

14:15

San Francisco (SFO) 2

15:55

Las Vegas Harry Reid (LAS) 1

Effective 2026-06-09 through 2026-07-29

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:40, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3644

14:40

Pensacola (PNS)

16:55

Denver (DEN)

Effective 2026-04-12 through 2026-05-17

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:15, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3644

14:40

Pensacola (PNS)

16:55

Denver (DEN)

Operates only on 2026-05-31

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:15, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3644

15:30

Pensacola (PNS)

17:40

Denver (DEN)

Effective 2026-04-07 through 2026-06-03

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 3:10, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3644

15:35

San Francisco (SFO) 2

17:00

Los Angeles (LAX) 1

Effective 2026-03-08 through 2026-04-05

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:25, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3644

15:35

Pensacola (PNS)

17:45

Denver (DEN)

Operates only on 2026-05-24

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:10, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3644

15:55

Pensacola (PNS)

18:10

Denver (DEN)

Effective 2026-04-11 through 2026-05-30

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:15, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3644

16:20

Pensacola (PNS)

18:35

Denver (DEN)

Effective 2026-04-09 through 2026-06-01

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 3:15, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3644

20:30

Austin (AUS)

22:25

Sacramento (SMF) B

Valid until 2026-01-04

Mon

Tue

Wed
-

Thu
-

Fri

Sat
-

Sun

Duration: 3:55, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3644

20:35

New Orleans (MSY)

21:50

Houston Hobby (HOU)

Effective 2026-08-06 through 2026-09-28

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 1:15, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3644

21:50

Orlando (MCO)

00:45(+1)

Luis Munoz Marin, San Juan (SJU) B

Effective 2026-06-06 through 2026-08-01

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 2:55, non-stop
Boeing 737-800 (73H)
The flight arrives 1 day after departure.

Direct Flights:

Southwest Airlines WN3644

22:25

Austin (AUS)

00:20(+1)

Sacramento (SMF) B

Valid until 2026-01-03

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:55, non-stop
Boeing 737-800 (73H)
The flight arrives 1 day after departure.

Non-Direct Flights:

Southwest Airlines WN3644

14:15

Nashville (BNA)

18:35

Denver (DEN)

Effective 2026-04-09 through 2026-06-01

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 5:20, 1-stop
Boeing 737 MAX 8 (7M8)

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Parallax here

This flight number is listed as serving the following routes:

Austin (AUS) - Sacramento (SMF)
Las Vegas Harry Reid (LAS) - San Diego (SAN)
Nashville (BNA) - Denver (DEN)
Nashville (BNA) - New York LaGuardia (LGA)
Nashville (BNA) - Pensacola (PNS)
New Orleans (MSY) - Houston Hobby (HOU)
Orlando (MCO) - Luis Munoz Marin, San Juan (SJU)
Pensacola (PNS) - Denver (DEN)
San Francisco (SFO) - Las Vegas Harry Reid (LAS)
San Francisco (SFO) - Los Angeles (LAX)

All Southwest Airlines flights

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